backmeds.RdKey Background Medications
data(backmeds)
A data frame with 12055 rows and 8 variables
A dataset with variables as follows:
RID N NA Participant roster ID
SITEID N NA Site ID
VISCODE T NA Visit code
USERDATE S NA Date record created
USERDATE2 S NA Date record last updated
KEYMED T NA At this visit, is participant on any of the following medication?